Missing NamespaceUri and ModelURI in Companion Spec. | OPC UA Companion Standards | Forum

Lost password?

Home Forum OPC UA Companion Standards Missing NamespaceUri and ModelURI i…

Missing NamespaceUri and ModelURI in Companion Spec.

Shubhi Gogna Shubhi Gogna

Member

Members

Forum Posts: 27

Member Since:
04/01/2014

Offline

09/10/2021 - 03:03

Hi Team,

I have a question regarding Missing NamespaceUri and ModelURI in NodeSet.xml (in any Companion Spec.).

As per UA Schema file and UASpec. Part 6, it is not mandatory to provide NamespaceUri and ModelURI, so , in this case, how do we handle creation of Companion Spec Type System in our AddressSpace. Which namespace URI will the Companion Spec. set to create NodeId's?

Also, I would like to know how big can be the size of Companion Spec.xml file?

Regards,

Shubhi Gogna

Randy Armstrong

Admin

Forum Posts: 1564

Member Since:
05/30/2017

Offline

09/10/2021 - 06:45

Failure to set the NamespaceUri and ModelUri consistently is an error that needs correction.

The nodeset needs to be fixed before it can be processed.

There is no specific upper limit on file size, however, extremely large (>100MB) will be a problem for many applications.

Shubhi Gogna Shubhi Gogna

Member

Members

Forum Posts: 27

Member Since:
04/01/2014

Offline

09/14/2021 - 03:04

Thanks Randy. It seems then that Schema file should be updated to have minOccur > 0 for NameSpaceUri and ModelURI

Randy Armstrong

Admin

Forum Posts: 1564

Member Since:
05/30/2017

Offline

09/14/2021 - 06:16

There are semantic requirements which cannot be captured in the XML schema.

i.e. the core UA nodeset file is allowed to have an empty namespace URI array but no one else is.

See spec clarification:

https://mantis.opcfoundation.o.....hp?id=7217

Forum Timezone: America/Phoenix

Most Users Ever Online: 510

Currently Online:

Guest(s) 49

Currently Browsing this Page:
1 Guest(s)